<?php

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/**

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* WordPress environment setup class.

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*

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* @package WordPress

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* @since 2.0.0

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*/

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class WP {

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/**

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* Public query variables.

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*

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* Long list of public query variables.

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*

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* @since 2.0.0

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* @var string[]

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*/

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public $public_query_vars = array( 'm', 'p', 'posts', 'w', 'cat', 'withcomments', 'withoutcomments', 's', 'search', 'exact', 'sentence', 'calendar', 'page', 'paged', 'more', 'tb', 'pb', 'author', 'order', 'orderby', 'year', 'monthnum', 'day', 'hour', 'minute', 'second', 'name', 'category_name', 'tag', 'feed', 'author_name', 'pagename', 'page_id', 'error', 'attachment', 'attachment_id', 'subpost', 'subpost_id', 'preview', 'robots', 'favicon', 'taxonomy', 'term', 'cpage', 'post_type', 'embed' );

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/**

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* Private query variables.

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*

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* Long list of private query variables.

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*

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* @since 2.0.0

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* @var string[]

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*/

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public $private_query_vars = array( 'offset', 'posts_per_page', 'posts_per_archive_page', 'showposts', 'nopaging', 'post_type', 'post_status', 'category__in', 'category__not_in', 'category__and', 'tag__in', 'tag__not_in', 'tag__and', 'tag_slug__in', 'tag_slug__and', 'tag_id', 'post_mime_type', 'perm', 'comments_per_page', 'post__in', 'post__not_in', 'post_parent', 'post_parent__in', 'post_parent__not_in', 'title', 'fields' );

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/**

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* Extra query variables set by the user.

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*

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* @since 2.1.0

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* @var array

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*/

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public $extra_query_vars = array();

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/**

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* Query variables for setting up the WordPress Query Loop.

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*

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* @since 2.0.0

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* @var array

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*/

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public $query_vars;

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/**

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* String parsed to set the query variables.

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*

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* @since 2.0.0

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* @var string

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*/

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public $query_string;

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/**

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* The request path, e.g. 2015/05/06.

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*

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* @since 2.0.0

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* @var string

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*/

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public $request;

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/**

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* Rewrite rule the request matched.

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*

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* @since 2.0.0

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* @var string

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*/

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public $matched_rule;

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/**

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* Rewrite query the request matched.

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*

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* @since 2.0.0

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* @var string

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*/

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public $matched_query;

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/**

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* Whether already did the permalink.

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*

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* @since 2.0.0

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* @var bool

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*/

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public $did_permalink = false;

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/**

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* Adds a query variable to the list of public query variables.

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*

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* @since 2.1.0

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*

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* @param string $qv Query variable name.

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*/

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public function add_query_var( $qv ) {

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if ( ! in_array( $qv, $this->public_query_vars, true ) ) {

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$this->public_query_vars[] = $qv;

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}

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}

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/**

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* Removes a query variable from a list of public query variables.

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*

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* @since 4.5.0

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*

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* @param string $name Query variable name.

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*/

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public function remove_query_var( $name ) {

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$this->public_query_vars = array_diff( $this->public_query_vars, array( $name ) );

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}

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/**

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* Sets the value of a query variable.

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*

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* @since 2.3.0

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*

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* @param string $key Query variable name.

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* @param mixed $value Query variable value.

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*/

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public function set_query_var( $key, $value ) {

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$this->query_vars[ $key ] = $value;

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}

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/**

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* Parses the request to find the correct WordPress query.

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*

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* Sets up the query variables based on the request. There are also many

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* filters and actions that can be used to further manipulate the result.

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*

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* @since 2.0.0

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*

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* @global WP_Rewrite $wp_rewrite WordPress rewrite component.

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*

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* @param array|string $extra_query_vars Set the extra query variables.

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*/

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public function parse_request( $extra_query_vars = '' ) {

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global $wp_rewrite;

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/**

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* Filters whether to parse the request.

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*

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* @since 3.5.0

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*

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* @param bool $bool Whether or not to parse the request. Default true.

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* @param WP $this Current WordPress environment instance.

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* @param array|string $extra_query_vars Extra passed query variables.

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*/

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if ( ! apply_filters( 'do_parse_request', true, $this, $extra_query_vars ) ) {

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return;

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}

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$this->query_vars = array();

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$post_type_query_vars = array();

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if ( is_array( $extra_query_vars ) ) {

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$this->extra_query_vars = & $extra_query_vars;

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} elseif ( ! empty( $extra_query_vars ) ) {

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parse_str( $extra_query_vars, $this->extra_query_vars );

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}

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// Process PATH_INFO, REQUEST_URI, and 404 for permalinks.

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// Fetch the rewrite rules.

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$rewrite = $wp_rewrite->wp_rewrite_rules();

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if ( ! empty( $rewrite ) ) {

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// If we match a rewrite rule, this will be cleared.

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$error = '404';

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$this->did_permalink = true;

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$pathinfo = isset( $_SERVER['PATH_INFO'] ) ? $_SERVER['PATH_INFO'] : '';

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list( $pathinfo ) = explode( '?', $pathinfo );

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$pathinfo = str_replace( '%', '%25', $pathinfo );

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list( $req_uri ) = explode( '?', $_SERVER['REQUEST_URI'] );

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$self = $_SERVER['PHP_SELF'];

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$home_path = trim( parse_url( home_url(), PHP_URL_PATH ), '/' );

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$home_path_regex = sprintf( '|^%s|i', preg_quote( $home_path, '|' ) );

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/*

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* Trim path info from the end and the leading home path from the front.

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* For path info requests, this leaves us with the requesting filename, if any.

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* For 404 requests, this leaves us with the requested permalink.

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*/

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$req_uri = str_replace( $pathinfo, '', $req_uri );

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$req_uri = trim( $req_uri, '/' );

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$req_uri = preg_replace( $home_path_regex, '', $req_uri );

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$req_uri = trim( $req_uri, '/' );

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$pathinfo = trim( $pathinfo, '/' );

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$pathinfo = preg_replace( $home_path_regex, '', $pathinfo );

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$pathinfo = trim( $pathinfo, '/' );

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$self = trim( $self, '/' );

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$self = preg_replace( $home_path_regex, '', $self );

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$self = trim( $self, '/' );

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// The requested permalink is in $pathinfo for path info requests and

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// $req_uri for other requests.

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if ( ! empty( $pathinfo ) && ! preg_match( '|^.*' . $wp_rewrite->index . '$|', $pathinfo ) ) {

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$requested_path = $pathinfo;

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} else {

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// If the request uri is the index, blank it out so that we don't try to match it against a rule.

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if ( $req_uri == $wp_rewrite->index ) {

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$req_uri = '';

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}

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$requested_path = $req_uri;

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}

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$requested_file = $req_uri;

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$this->request = $requested_path;

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// Look for matches.

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$request_match = $requested_path;

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if ( empty( $request_match ) ) {

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// An empty request could only match against ^$ regex.

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if ( isset( $rewrite['$'] ) ) {

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$this->matched_rule = '$';

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$query = $rewrite['$'];

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$matches = array( '' );

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}

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} else {

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foreach ( (array) $rewrite as $match => $query ) {

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// If the requested file is the anchor of the match, prepend it to the path info.

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if ( ! empty( $requested_file ) && strpos( $match, $requested_file ) === 0 && $requested_file != $requested_path ) {

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$request_match = $requested_file . '/' . $requested_path;

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}

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if ( preg_match( "#^$match#", $request_match, $matches ) ||

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preg_match( "#^$match#", urldecode( $request_match ), $matches ) ) {

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if ( $wp_rewrite->use_verbose_page_rules && preg_match( '/pagename=\$matches\[([0-9]+)\]/', $query, $varmatch ) ) {

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// This is a verbose page match, let's check to be sure about it.

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$page = get_page_by_path( $matches[ $varmatch[1] ] );

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if ( ! $page ) {

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continue;

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}

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$post_status_obj = get_post_status_object( $page->post_status );

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if ( ! $post_status_obj->public && ! $post_status_obj->protected

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&& ! $post_status_obj->private && $post_status_obj->exclude_from_search ) {

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continue;

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}

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}

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// Got a match.

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$this->matched_rule = $match;

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break;

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}

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}

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}

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if ( isset( $this->matched_rule ) ) {

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// Trim the query of everything up to the '?'.

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$query = preg_replace( '!^.+\?!', '', $query );

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// Substitute the substring matches into the query.

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$query = addslashes( WP_MatchesMapRegex::apply( $query, $matches ) );

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$this->matched_query = $query;

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// Parse the query.

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parse_str( $query, $perma_query_vars );

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// If we're processing a 404 request, clear the error var since we found something.

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if ( '404' == $error ) {

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unset( $error, $_GET['error'] );

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}

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}

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// If req_uri is empty or if it is a request for ourself, unset error.

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if ( empty( $requested_path ) || $requested_file == $self || strpos( $_SERVER['PHP_SELF'], 'wp-admin/' ) !== false ) {

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unset( $error, $_GET['error'] );

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if ( isset( $perma_query_vars ) && strpos( $_SERVER['PHP_SELF'], 'wp-admin/' ) !== false ) {

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unset( $perma_query_vars );

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}

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$this->did_permalink = false;

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}

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}

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/**

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* Filters the query variables allowed before processing.

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*

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* Allows (publicly allowed) query vars to be added, removed, or changed prior

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* to executing the query. Needed to allow custom rewrite rules using your own arguments

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* to work, or any other custom query variables you want to be publicly available.

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*

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* @since 1.5.0

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*

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* @param string[] $public_query_vars The array of allowed query variable names.

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*/

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$this->public_query_vars = apply_filters( 'query_vars', $this->public_query_vars );

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foreach ( get_post_types( array(), 'objects' ) as $post_type => $t ) {

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if ( is_post_type_viewable( $t ) && $t->query_var ) {

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$post_type_query_vars[ $t->query_var ] = $post_type;

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}

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}

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foreach ( $this->public_query_vars as $wpvar ) {

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if ( isset( $this->extra_query_vars[ $wpvar ] ) ) {

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$this->query_vars[ $wpvar ] = $this->extra_query_vars[ $wpvar ];

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} elseif ( isset( $_GET[ $wpvar ] ) && isset( $_POST[ $wpvar ] ) && $_GET[ $wpvar ] !== $_POST[ $wpvar ] ) {

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wp_die( __( 'A variable mismatch has been detected.' ), __( 'Sorry, you are not allowed to view this item.' ), 400 );

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} elseif ( isset( $_POST[ $wpvar ] ) ) {

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$this->query_vars[ $wpvar ] = $_POST[ $wpvar ];

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} elseif ( isset( $_GET[ $wpvar ] ) ) {

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$this->query_vars[ $wpvar ] = $_GET[ $wpvar ];

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} elseif ( isset( $perma_query_vars[ $wpvar ] ) ) {

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$this->query_vars[ $wpvar ] = $perma_query_vars[ $wpvar ];

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}

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if ( ! empty( $this->query_vars[ $wpvar ] ) ) {

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if ( ! is_array( $this->query_vars[ $wpvar ] ) ) {

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$this->query_vars[ $wpvar ] = (string) $this->query_vars[ $wpvar ];

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} else {

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foreach ( $this->query_vars[ $wpvar ] as $vkey => $v ) {

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if ( is_scalar( $v ) ) {

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$this->query_vars[ $wpvar ][ $vkey ] = (string) $v;

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}

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}

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}

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if ( isset( $post_type_query_vars[ $wpvar ] ) ) {

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$this->query_vars['post_type'] = $post_type_query_vars[ $wpvar ];

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$this->query_vars['name'] = $this->query_vars[ $wpvar ];

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}

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}

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}

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// Convert urldecoded spaces back into '+'.

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foreach ( get_taxonomies( array(), 'objects' ) as $taxonomy => $t ) {

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if ( $t->query_var && isset( $this->query_vars[ $t->query_var ] ) ) {

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$this->query_vars[ $t->query_var ] = str_replace( ' ', '+', $this->query_vars[ $t->query_var ] );

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}

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}

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// Don't allow non-publicly queryable taxonomies to be queried from the front end.

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if ( ! is_admin() ) {

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foreach ( get_taxonomies( array( 'publicly_queryable' => false ), 'objects' ) as $taxonomy => $t ) {

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/*

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* Disallow when set to the 'taxonomy' query var.

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* Non-publicly queryable taxonomies cannot register custom query vars. See register_taxonomy().

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*/

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if ( isset( $this->query_vars['taxonomy'] ) && $taxonomy === $this->query_vars['taxonomy'] ) {

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unset( $this->query_vars['taxonomy'], $this->query_vars['term'] );

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}

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}

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}

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// Limit publicly queried post_types to those that are 'publicly_queryable'.

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if ( isset( $this->query_vars['post_type'] ) ) {

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$queryable_post_types = get_post_types( array( 'publicly_queryable' => true ) );

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if ( ! is_array( $this->query_vars['post_type'] ) ) {

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if ( ! in_array( $this->query_vars['post_type'], $queryable_post_types, true ) ) {

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unset( $this->query_vars['post_type'] );

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}

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} else {

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$this->query_vars['post_type'] = array_intersect( $this->query_vars['post_type'], $queryable_post_types );

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}

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}

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// Resolve conflicts between posts with numeric slugs and date archive queries.

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$this->query_vars = wp_resolve_numeric_slug_conflicts( $this->query_vars );

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foreach ( (array) $this->private_query_vars as $var ) {

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if ( isset( $this->extra_query_vars[ $var ] ) ) {

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$this->query_vars[ $var ] = $this->extra_query_vars[ $var ];

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}

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}

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if ( isset( $error ) ) {

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$this->query_vars['error'] = $error;

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}

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/**

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* Filters the array of parsed query variables.

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*

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* @since 2.1.0

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*

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* @param array $query_vars The array of requested query variables.

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*/

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$this->query_vars = apply_filters( 'request', $this->query_vars );

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/**

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* Fires once all query variables for the current request have been parsed.

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*

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* @since 2.1.0

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*

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* @param WP $this Current WordPress environment instance (passed by reference).

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*/

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do_action_ref_array( 'parse_request', array( &$this ) );

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}

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/**

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* Sends additional HTTP headers for caching, content type, etc.

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*

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* Sets the Content-Type header. Sets the 'error' status (if passed) and optionally exits.

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* If showing a feed, it will also send Last-Modified, ETag, and 304 status if needed.

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*

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* @since 2.0.0

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* @since 4.4.0 `X-Pingback` header is added conditionally after posts have been queried in handle_404().

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*/

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public function send_headers() {

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$headers = array();

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$status = null;

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$exit_required = false;

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if ( is_user_logged_in() ) {

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$headers = array_merge( $headers, wp_get_nocache_headers() );

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} elseif ( ! empty( $_GET['unapproved'] ) && ! empty( $_GET['moderation-hash'] ) ) {

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// Unmoderated comments are only visible for 10 minutes via the moderation hash.

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$expires = 10 * MINUTE_IN_SECONDS;

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$headers['Expires'] = gmdate( 'D, d M Y H:i:s', time() + $expires );

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$headers['Cache-Control'] = sprintf(

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'max-age=%d, must-revalidate',

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$expires

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);

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}

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if ( ! empty( $this->query_vars['error'] ) ) {

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$status = (int) $this->query_vars['error'];

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if ( 404 === $status ) {

[418] Fix | Delete

if ( ! is_user_logged_in() ) {

[419] Fix | Delete

$headers = array_merge( $headers, wp_get_nocache_headers() );

[420] Fix | Delete

}

[421] Fix | Delete

$headers['Content-Type'] = get_option( 'html_type' ) . '; charset=' . get_option( 'blog_charset' );

[422] Fix | Delete

} elseif ( in_array( $status, array( 403, 500, 502, 503 ), true ) ) {

[423] Fix | Delete

$exit_required = true;

[424] Fix | Delete

}

[425] Fix | Delete

} elseif ( empty( $this->query_vars['feed'] ) ) {

[426] Fix | Delete

$headers['Content-Type'] = get_option( 'html_type' ) . '; charset=' . get_option( 'blog_charset' );

[427] Fix | Delete

} else {

[428] Fix | Delete

// Set the correct content type for feeds.

[429] Fix | Delete

$type = $this->query_vars['feed'];

[430] Fix | Delete

if ( 'feed' === $this->query_vars['feed'] ) {

[431] Fix | Delete

$type = get_default_feed();

[432] Fix | Delete

}

[433] Fix | Delete

$headers['Content-Type'] = feed_content_type( $type ) . '; charset=' . get_option( 'blog_charset' );

[434] Fix | Delete

[435] Fix | Delete

// We're showing a feed, so WP is indeed the only thing that last changed.

[436] Fix | Delete

if ( ! empty( $this->query_vars['withcomments'] )

[437] Fix | Delete

|| false !== strpos( $this->query_vars['feed'], 'comments-' )

[438] Fix | Delete

|| ( empty( $this->query_vars['withoutcomments'] )

[439] Fix | Delete

&& ( ! empty( $this->query_vars['p'] )

[440] Fix | Delete

|| ! empty( $this->query_vars['name'] )

[441] Fix | Delete

|| ! empty( $this->query_vars['page_id'] )

[442] Fix | Delete

|| ! empty( $this->query_vars['pagename'] )

[443] Fix | Delete

|| ! empty( $this->query_vars['attachment'] )

[444] Fix | Delete

|| ! empty( $this->query_vars['attachment_id'] )

[445] Fix | Delete

)

[446] Fix | Delete

)

[447] Fix | Delete

) {

[448] Fix | Delete

$wp_last_modified = mysql2date( 'D, d M Y H:i:s', get_lastcommentmodified( 'GMT' ), false );

[449] Fix | Delete

} else {

[450] Fix | Delete

$wp_last_modified = mysql2date( 'D, d M Y H:i:s', get_lastpostmodified( 'GMT' ), false );

[451] Fix | Delete

}

[452] Fix | Delete

[453] Fix | Delete

if ( ! $wp_last_modified ) {

[454] Fix | Delete

$wp_last_modified = gmdate( 'D, d M Y H:i:s' );

[455] Fix | Delete

}

[456] Fix | Delete

[457] Fix | Delete

$wp_last_modified .= ' GMT';

[458] Fix | Delete

[459] Fix | Delete

$wp_etag = '"' . md5( $wp_last_modified ) . '"';

[460] Fix | Delete

$headers['Last-Modified'] = $wp_last_modified;

[461] Fix | Delete

$headers['ETag'] = $wp_etag;

[462] Fix | Delete

[463] Fix | Delete

// Support for conditional GET.

[464] Fix | Delete

if ( isset( $_SERVER['HTTP_IF_NONE_MATCH'] ) ) {

[465] Fix | Delete

$client_etag = wp_unslash( $_SERVER['HTTP_IF_NONE_MATCH'] );

[466] Fix | Delete

} else {

[467] Fix | Delete

$client_etag = false;

[468] Fix | Delete

}

[469] Fix | Delete

[470] Fix | Delete

$client_last_modified = empty( $_SERVER['HTTP_IF_MODIFIED_SINCE'] ) ? '' : trim( $_SERVER['HTTP_IF_MODIFIED_SINCE'] );

[471] Fix | Delete

// If string is empty, return 0. If not, attempt to parse into a timestamp.

[472] Fix | Delete

$client_modified_timestamp = $client_last_modified ? strtotime( $client_last_modified ) : 0;

[473] Fix | Delete

[474] Fix | Delete

// Make a timestamp for our most recent modification..

[475] Fix | Delete

$wp_modified_timestamp = strtotime( $wp_last_modified );

[476] Fix | Delete

[477] Fix | Delete

if ( ( $client_last_modified && $client_etag ) ?

[478] Fix | Delete

( ( $client_modified_timestamp >= $wp_modified_timestamp ) && ( $client_etag == $wp_etag ) ) :

[479] Fix | Delete

( ( $client_modified_timestamp >= $wp_modified_timestamp ) || ( $client_etag == $wp_etag ) ) ) {

[480] Fix | Delete

$status = 304;

[481] Fix | Delete

$exit_required = true;

[482] Fix | Delete

}

[483] Fix | Delete

}

[484] Fix | Delete

[485] Fix | Delete

/**

[486] Fix | Delete

* Filters the HTTP headers before they're sent to the browser.

[487] Fix | Delete

*

[488] Fix | Delete

* @since 2.8.0

[489] Fix | Delete

*

[490] Fix | Delete

* @param string[] $headers Associative array of headers to be sent.

[491] Fix | Delete

* @param WP $wp Current WordPress environment instance.

[492] Fix | Delete

*/

[493] Fix | Delete

$headers = apply_filters( 'wp_headers', $headers, $this );

[494] Fix | Delete

[495] Fix | Delete

if ( ! empty( $status ) ) {

[496] Fix | Delete

status_header( $status );

[497] Fix | Delete

}

[498] Fix | Delete

[499] Fix | Delete